Just to remind you...when McCain was shot down over Vietnam, he broke both arms and a leg..a mob then beat him, crushed his shoulder and bayoneted his left foot and abdomen....when he was thrown in prison he received no medical treatment until nearly a month later when the North Vietnamese learned his father was a Rear Admiral in the Pacific Fleet..
Think you would have a slight limp too...
Source: Wikipedia; John McCain
I'd probably be dead. Are you suggesting that McCain's ill health can be used as an asset?